College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
Can you please solve Question 4?

Transcribed Image Text:1) The tires on a new car have a diameter of 2 ft and have a 60,000-mile warranty.
a) Determine the angle (in radians) through which one of these tires will rotate during the
warranty period.
b) How many revolutions is this?
2) A centrifuge in a medical laboratory rotates at an angular speed of 3200 rev/min. When
switched off, it rotates through 60 revolutions before coming to rest. Find the constant angular
acceleration of the centrifuge.
3) Find the angular speed of Earth about the Sun in radians per second and degrees per day.
4) Find the centripetal accelerations of
a) a point on the equator of Earth
b) the North Pole, and
c) New York,
due to the rotation of Earth about its axis.
Expert Solution

Step 1
Given data
*The radius of the earth is r = 6.38 × 106 m
*The period is T = 1 day = 86400 s
*The radius of the earth at the north pole is R = 6.35 × 106 m
Step 2
(a)
The expression for the centripetal acceleration at a point on the equator is given as
Substitute the values in the above expression as
Thus the centripetal acceleration at a point on the equator is ac = 3.37 × 10-2 m/s2
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